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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#ifndef ZSTRING_H_73425873425789
#define ZSTRING_H_73425873425789
#include "string_base.h"
#ifdef ZEN_WIN //Windows encodes Unicode as UTF-16 wchar_t
using Zchar = wchar_t;
#define Zstr(x) L ## x
const Zchar FILE_NAME_SEPARATOR = L'\\';
#elif defined ZEN_LINUX || defined ZEN_MAC //Linux uses UTF-8
using Zchar = char;
#define Zstr(x) x
const Zchar FILE_NAME_SEPARATOR = '/';
#endif
//"The reason for all the fuss above" - Loki/SmartPtr
//a high-performance string for interfacing with native OS APIs in multithreaded contexts
using Zstring = zen::Zbase<Zchar, zen::StorageRefCountThreadSafe, zen::AllocatorOptimalSpeed>;
int cmpStringNoCase(const wchar_t* lhs, size_t lhsLen, const wchar_t* rhs, size_t rhsLen);
#if defined ZEN_LINUX || defined ZEN_MAC
int cmpStringNoCase(const char* lhs, size_t lhsLen, const char* rhs, size_t rhsLen);
#endif
template <class S, class T> inline
bool equalNoCase(const S& lhs, const T& rhs) { using namespace zen; return cmpStringNoCase(strBegin(lhs), strLength(lhs), strBegin(rhs), strLength(rhs)) == 0; }
template <class S>
S makeUpperCopy(S str);
//Compare filepaths: Windows/OS X does NOT distinguish between upper/lower-case, while Linux DOES
int cmpFilePath(const wchar_t* lhs, size_t lhsLen, const wchar_t* rhs, size_t rhsLen);
#if defined ZEN_LINUX || defined ZEN_MAC
int cmpFilePath(const char* lhs, size_t lhsLen, const char* rhs, size_t rhsLen);
#endif
template <class S, class T> inline
bool equalFilePath(const S& lhs, const T& rhs) { using namespace zen; return cmpFilePath(strBegin(lhs), strLength(lhs), strBegin(rhs), strLength(rhs)) == 0; }
struct LessFilePath
{
template <class S, class T>
bool operator()(const S& lhs, const T& rhs) const { using namespace zen; return cmpFilePath(strBegin(lhs), strLength(lhs), strBegin(rhs), strLength(rhs)) < 0; }
};
inline
Zstring appendSeparator(Zstring path) //support rvalue references!
{
return zen::endsWith(path, FILE_NAME_SEPARATOR) ? path : (path += FILE_NAME_SEPARATOR); //returning a by-value parameter implicitly converts to r-value!
}
inline
Zstring getFileExtension(const Zstring& filePath)
{
const Zstring shortName = afterLast(filePath, FILE_NAME_SEPARATOR, zen::IF_MISSING_RETURN_ALL);
return afterLast(shortName, Zchar('.'), zen::IF_MISSING_RETURN_NONE);
}
template <class S, class T> inline
bool pathStartsWith(const S& str, const T& prefix)
{
using namespace zen;
const size_t pfLen = strLength(prefix);
if (strLength(str) < pfLen)
return false;
return cmpFilePath(strBegin(str), pfLen, strBegin(prefix), pfLen) == 0;
}
template <class S, class T> inline
bool pathEndsWith(const S& str, const T& postfix)
{
using namespace zen;
const size_t strLen = strLength(str);
const size_t pfLen = strLength(postfix);
if (strLen < pfLen)
return false;
return cmpFilePath(strBegin(str) + strLen - pfLen, pfLen, strBegin(postfix), pfLen) == 0;
}
//################################# inline implementation ########################################
#ifdef ZEN_WIN
void makeUpperInPlace(wchar_t* str, size_t strLen);
#elif defined ZEN_LINUX || defined ZEN_MAC
inline
void makeUpperInPlace(wchar_t* str, size_t strLen)
{
std::for_each(str, str + strLen, [](wchar_t& c) { c = std::towupper(c); }); //locale-dependent!
}
inline
void makeUpperInPlace(char* str, size_t strLen)
{
std::for_each(str, str + strLen, [](char& c) { c = std::toupper(static_cast<unsigned char>(c)); }); //locale-dependent!
//result of toupper() is an unsigned char mapped to int range, so the char representation is in the last 8 bits and we need not care about signedness!
//this should work for UTF-8, too: all chars >= 128 are mapped upon themselves!
}
inline
int cmpStringNoCase(const wchar_t* lhs, size_t lhsLen, const wchar_t* rhs, size_t rhsLen)
{
assert(std::find(lhs, lhs + lhsLen, 0) == lhs + lhsLen); //don't expect embedded nulls!
assert(std::find(rhs, rhs + rhsLen, 0) == rhs + rhsLen); //
const int rv = ::wcsncasecmp(lhs, rhs, std::min(lhsLen, rhsLen)); //locale-dependent!
if (rv != 0)
return rv;
return static_cast<int>(lhsLen) - static_cast<int>(rhsLen);
}
inline
int cmpStringNoCase(const char* lhs, size_t lhsLen, const char* rhs, size_t rhsLen)
{
assert(std::find(lhs, lhs + lhsLen, 0) == lhs + lhsLen); //don't expect embedded nulls!
assert(std::find(rhs, rhs + rhsLen, 0) == rhs + rhsLen); //
const int rv = ::strncasecmp(lhs, rhs, std::min(lhsLen, rhsLen)); //locale-dependent!
if (rv != 0)
return rv;
return static_cast<int>(lhsLen) - static_cast<int>(rhsLen);
}
#endif
template <class S> inline
S makeUpperCopy(S str)
{
const size_t len = str.length(); //we assert S is a string type!
if (len > 0)
makeUpperInPlace(&*str.begin(), len);
return std::move(str); //"str" is an l-value parameter => no copy elision!
}
inline
int cmpFilePath(const wchar_t* lhs, size_t lhsLen, const wchar_t* rhs, size_t rhsLen)
{
#if defined ZEN_WIN || defined ZEN_MAC
return cmpStringNoCase(lhs, lhsLen, rhs, rhsLen);
#elif defined ZEN_LINUX
assert(std::find(lhs, lhs + lhsLen, 0) == lhs + lhsLen); //don't expect embedded nulls!
assert(std::find(rhs, rhs + rhsLen, 0) == rhs + rhsLen); //
const int rv = std::wcsncmp(lhs, rhs, std::min(lhsLen, rhsLen));
if (rv != 0)
return rv;
return static_cast<int>(lhsLen) - static_cast<int>(rhsLen);
#endif
}
#if defined ZEN_LINUX || defined ZEN_MAC
inline
int cmpFilePath(const char* lhs, size_t lhsLen, const char* rhs, size_t rhsLen)
{
#if defined ZEN_MAC
return cmpStringNoCase(lhs, lhsLen, rhs, rhsLen);
#elif defined ZEN_LINUX
assert(std::find(lhs, lhs + lhsLen, 0) == lhs + lhsLen); //don't expect embedded nulls!
assert(std::find(rhs, rhs + rhsLen, 0) == rhs + rhsLen); //
const int rv = std::strncmp(lhs, rhs, std::min(lhsLen, rhsLen));
if (rv != 0)
return rv;
return static_cast<int>(lhsLen) - static_cast<int>(rhsLen);
#endif
}
#endif
//---------------------------------------------------------------------------
//ZEN macro consistency checks:
#ifdef ZEN_WIN
#if defined ZEN_LINUX || defined ZEN_MAC
#error more than one target platform defined
#endif
#ifdef ZEN_WIN_VISTA_AND_LATER
#ifdef ZEN_WIN_PRE_VISTA
#error choose only one of the two variants
#endif
#elif defined ZEN_WIN_PRE_VISTA
#ifdef ZEN_WIN_VISTA_AND_LATER
#error choose only one of the two variants
#endif
#else
#error choose one of the two variants
#endif
#elif defined ZEN_LINUX
#if defined ZEN_WIN || defined ZEN_MAC
#error more than one target platform defined
#endif
#elif defined ZEN_MAC
#if defined ZEN_WIN || defined ZEN_LINUX
#error more than one target platform defined
#endif
#else
#error no target platform defined
#endif
#endif //ZSTRING_H_73425873425789
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